Both of them was rendered in blender (tuhopuu) and both of them is real env map.
Charome fx
http://sbup.jyscomputers.com/ada89/Anim/envmap1.avi
env map + reflect style texture + semi transparent white + other small setting
Glass
http://sbup.jyscomputers.com/ada89/Anim/envmap2.avi
env map + refract style texture + other small setting
Please tell me what u guys think 
WOW…the glass one is REALLY good, but the chrome one doesn’t look metallic enough IMO. Great work though. Maybe to give a better idea of how the material reflects the surroundings you could put some test patterns on the rotating cube. Perhaps numbers or geometric shapes. Maybe colors.
I agree with Desoto-111. I think the glass one is the best. Had me fooled that Blender could calculate refraction!
Perhaps you have the Ref set too high on the metalic one?
Thanks for that kind word guys, about the metalic thing, i did mean to set the ref full and add a white tint to the mesh to make that silvery colour …and i also feel happy with the resault…i will try to make another test render on the charome fx tough…let see 
yep, the glassy one is groovy lookin’
and yes, add some test patterns to the walls, it gives better idea on how the texture really behaves (so far I haven’t had any decent experiences with it).
Yes glass is nice, chrome is too ‘bright’ and there is no much to reflect around…
Stefano